Sex;Social class;Average number;Total BOTH SEXES;Total;Average;5.51 BOTH SEXES;Total;Standard deviation;1.42 BOTH SEXES;I;Average;5.66 BOTH SEXES;I;Standard deviation;1.28 BOTH SEXES;II;Average;5.76 BOTH SEXES;II;Standard deviation;1.40 BOTH SEXES;III;Average;5.48 BOTH SEXES;III;Standard deviation;1.42 BOTH SEXES;IV;Average;5.60 BOTH SEXES;IV;Standard deviation;1.36 BOTH SEXES;V;Average;5.47 BOTH SEXES;V;Standard deviation;1.44 BOTH SEXES;VI;Average;5.17 BOTH SEXES;VI;Standard deviation;1.53 BOTH SEXES;No data recorded;Average;5.80 BOTH SEXES;No data recorded;Standard deviation;1.23 MALES;Total;Average;5.44 MALES;Total;Standard deviation;1.42 MALES;I;Average;5.58 MALES;I;Standard deviation;1.31 MALES;II;Average;5.66 MALES;II;Standard deviation;1.45 MALES;III;Average;5.31 MALES;III;Standard deviation;1.49 MALES;IV;Average;5.51 MALES;IV;Standard deviation;1.37 MALES;V;Average;5.44 MALES;V;Standard deviation;1.39 MALES;VI;Average;5.11 MALES;VI;Standard deviation;1.51 MALES;No data recorded;Average;. MALES;No data recorded;Standard deviation;. FEMALES;Total;Average;5.60 FEMALES;Total;Standard deviation;1.41 FEMALES;I;Average;5.76 FEMALES;I;Standard deviation;1.25 FEMALES;II;Average;5.87 FEMALES;II;Standard deviation;1.33 FEMALES;III;Average;5.65 FEMALES;III;Standard deviation;1.32 FEMALES;IV;Average;5.76 FEMALES;IV;Standard deviation;1.33 FEMALES;V;Average;5.51 FEMALES;V;Standard deviation;1.50 FEMALES;VI;Average;5.23 FEMALES;VI;Standard deviation;1.54 FEMALES;No data recorded;Average;. FEMALES;No data recorded;Standard deviation;.